Determine if mobile device is on a moving airplane?

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http://stackoverflow.com – I am wondering if there might be a good way to determine if a mobile device is powered on and located on a flying airplane. Could a solution be generalized for both iOS and Android platforms? Could position, altitude, and speed be determined at a minimum altitude? Would gps be required? Would localization via cel tower info be adequate? Something like: if (altitude > 100ft off ground) && (speed > 200 mph) then flying = true Would not be perfect, but might be acceptably accurate. Why: I wonder if aggregate data representing whether a mobile device was powered on during t (HowTos)